Question
In: Statistics and Probability
A researcher wanted to see whether there was a difference between NYC citizens and Boston citizens...
A
researcher wanted to see whether there was a difference between NYC
citizens and Boston citizens in the amount of time (in hours) they
spent outside during April 2020. He collected two samples – one of
NYC citizens and the other of Boston citizens, and measured the
amount of time each subject spent outside during April 2020. Sample
#1 (of NYC citizens) contained 24 subjects (n1=24), the mean number
of hours spent outside was M1=40, and the sample’s variance was
S12=64. Sample #2 (of Boston citizens) contained 24 subjects
(n2=24), the mean number of hours spent outside was M2=28, and the
sample’s variance was S22=25.
a.
Which test should be used to analyze your data? Explain your
answer. (3 points)
b.
Conduct the appropriate nondirectional hypothesis test on these
data. Use α=0.05. You must submit your calculations (if you do not
submit your calculations, you will lose points). (8 points)
c.
Calculate the appropriate effect size measure. You must submit your
calculations (if you do not submit your calculations, you will lose
points). (4 points)
d.
Compute a 95% confidence interval for the mean difference.
Solutions
orchestra answered 2 years agoRelated Solutions
A researcher wanted to see whether there was a difference between NYC citizens and Boston citizens...
A researcher wanted to see whether there was a difference
between NYC citizens and Boston citizens in the amount of time (in
hours) they spent outside during April 2020. He collected two
samples – one of NYC citizens and the other of Boston citizens, and
measured the amount of time each subject spent outside during April
2020. Sample #1 (of NYC citizens) contained 24 subjects
(n1=24), the mean number of hours spent outside was
M1=40, and the sample’s variance was...
A researcher wanted to see whether there was a difference between NYC citizens and Boston citizens...
A researcher wanted to see whether there was a difference
between NYC citizens and Boston citizens in the amount of time (in
hours) they spent outside during April 2020. He collected two
samples – one of NYC citizens and the other of Boston citizens, and
measured the amount of time each subject spent outside during April
2020. Sample #1 (of NYC citizens) contained 20 subjects
(n1=24), the mean number of hours spent outside was
M1=40, and the sample’s variance was...
A researcher wanted to see whether there was a difference between NYC citizens and Boston citizens...
A researcher wanted to see whether there was a difference
between NYC citizens and Boston citizens in the amount of time (in
hours) they spent outside during April 2020. He collected two
samples – one of NYC citizens and the other of Boston citizens, and
measured the amount of time each subject spent outside during April
2020. Sample #1 (of NYC citizens) contained 20 subjects
(n1=20), the mean number of hours spent outside was
M1=40, and the sample’s variance was...
QUESTION 16 A researcher wanted to see whether there was a difference between NYC citizens and...
QUESTION 16
A researcher wanted to see whether there was a difference
between NYC citizens and Boston citizens in the amount of time (in
hours) they spent outside during April 2020. He collected two
samples – one of NYC citizens and the other of Boston citizens, and
measured the amount of time each subject spent outside during April
2020. Sample #1 (of NYC citizens) contained 20 subjects
(n1=24), the mean number of hours spent outside was
M1=40, and the sample’s...
A researcher wanted to see whether there was a difference between dogs, cats and ferrets in...
A researcher wanted to see whether there was a difference
between dogs, cats and ferrets in the mean number of trials
required to train them to touch a target with their nose. The
researcher samples 6 dogs, 6 cats and 6 ferrets and trained them to
touch a target with their nose. The amount of trials required for
each animal is listed in the table below. The overall mean was
MTotal = 23.5. Assume that the amount of trials
distributes...
A researcher wanted to know if there was a difference in the effectiveness training results between...
A researcher wanted to know if there was a difference in the
effectiveness training results between permanent employees at a
business and temporary employees at the same business. The two
training methods were in-person training or via videos. After the
training, each employee took a test to determine the effectiveness
of the training. Draw the correct design for this experiment.
(Hint: In the design, it is easier to start off with the training
methodology.) Remember to clearly indicate what is...
A researcher wishes to see whether there is any difference in the average starting salary for...
A researcher wishes to see whether there is any difference in
the average starting salary for a
college graduate's first job after graduating with the degrees
shown. She randomly sampled graduates in
each degree and the results are listed. At cr = .10, can we
conclude that there is a difference in the average
starting salaries of these graduates?
Economics
42
53
49
44
54
Medicine
69
54
58
64
56
History
35
40
53
42
X1=
X2=
X3=
XGM=...
A researcher wishes to see whether there is any difference in the weight gains of athletes...
A researcher wishes to see whether there is any difference in
the weight gains of athletes following one of three special diets.
Athletes are randomly assigned to three groups and placed on the
diet for 6 weeks. The weight gains (in pounds) are shown here. At α
= 0.05, can the researcher conclude that there is a difference in
the diets?
Diet
A
Diet
B
Diet
C
Total
3
10
8
6
12
3
7
11
2
4
14 ...
Suppose we wanted to know if there is a difference in the proportion of citizens from...
Suppose we wanted to know if there is a difference in the
proportion of citizens from different provinces who would support
the idea of federal laws for mask wearing in public. Upon
collecting some sample data we find that 34 out of 50 residents of
Ontario would support such legislation, while only 28 out of 50
residents of Alberta support the idea of such laws.
a.) Conduct the appropriate test of hypothesis for these data at
the .05 level
b.)...
Suppose we wanted to know if there is a difference in the proportion of citizens from...
Suppose we wanted to know if there is a difference in the
proportion of citizens from different provinces who would support
the idea of federal laws for mask wearing in public. Upon
collecting some sample data we find that 34 out of 50 residents of
Ontario would support such legislation, while only 28 out of 50
residents of Alberta support the idea of such laws.
a.) Conduct the appropriate test of hypothesis for these data at
the .05 level
b.)...
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